What Write Ahead Logging Is and Why It Matters
Kendra Little talks about write ahead logging in SQL Server, one of the basic concepts that developers and DBAs should understand.
2024-06-12 (first published: 2020-01-20)
4,921 reads
Database Performance
Query Performance Diagnostics with sp_PerfSQ
This article discusses sp_PerfSQ a diagnostic tool designed to quantify performance features of database queries with active requests. It includes a behavioural parser and can assist in troubleshooting complex performance issues.
2021-12-24 (first published: 2019-12-02)
11,536 reads
2020-03-03 (first published: 2019-11-25)
10,742 reads
Parameter pain
A forum question came up a few days ago regarding an abnormally large procedural cache. In an attempt to help out, I threw together a few ideas (some wrong, some right) and started looking at the types of query that were in the cache. A lot of the queries were in the format select * […]
2019-11-11
4,812 reads
2019-10-28
7,261 reads
2019-06-10
1,105 reads
Bad Guesses and Bad Choices: Better Living Through Indexes
Batch Cussidy In the last post, we looked at how S...
2019-05-24
2019-05-24
2019-05-22
Predicate Execution Order on Mixed Data Type Columns
Watch this week’s episode on YouTube. SQL Server...
2019-05-22
Blogs
Accessing the Data API Builder MCP Server from VS Code
By Steve Jones
I recently started playing with the MCP Server for SQL Server, which is a...
From DBA or Data Engineer to AI Engineer: A Realistic Path
If you spend your days tuning queries, managing pipelines, or keeping a production database...
Asynchronous Replication of Snapshots from an ActiveCluster Pod to a Third Array
I’ve been rebuilding my three-site SQL Server demo lab, and I ran into something...
Forums
STRING_AGG DISTINCT
Has anyone written a wrapper function (or similar) around STRING_AGG() to allow the retrieval...
In-place OS upgrade or migration to new OS?
Putting this here as we're currently on SQL Server 2019 installed on Windows Server...
Never is Not the Policy
Comments posted to this topic are about the item Never is Not the Policy
Question of the Day
Rebuilding All Indexes
I have added a few indexes to one of my tables in SQL Server 2025:
ALTER TABLE dbo.CustomerContact
ADD CONSTRAINT PK_CustomerContact
PRIMARY KEY (CustomerID);
-- Create index on CustomerEmail
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (CustomerEmail);
CREATE INDEX IX_CustomerContact_CustomerPhone
ON dbo.CustomerContact (phone);
I then do this to disable one index:
alter index IX_CustomerContact_CustomerPhone on dbo.CustomerContact disableI see this when I check the index status:
I decide to rebuild all indexes with this command:
ALTER INDEX ALL ON dbo.CustomerContact rebuildAfter I do this, what will I see for the index status? See possible answers